Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for shielding circuit board and electronic equipment applying the method

A technology for electronic equipment and circuit boards, applied in the fields of magnetic/electric field shielding, electrical components, etc., can solve the problems of poor manufacturability and high cost, and achieve the effects of low cost, electromagnetic radiation suppression, and good manufacturability

Active Publication Date: 2009-05-27
HISENSE VISUAL TECH CO LTD
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high cost and poor manufacturability caused by welding metal shell shields on circuit boards to suppress electromagnetic radiation of circuit boards in existing electronic equipment, the present invention provides a brand new circuit board shielding method, by using shielded wire or metal sheet instead of the existing metal shell shield, the electromagnetic radiation generated by the circuit board has a good local shielding effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for shielding circuit board and electronic equipment applying the method
  • Method for shielding circuit board and electronic equipment applying the method
  • Method for shielding circuit board and electronic equipment applying the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1. In this embodiment, a TV core board is taken as an example to describe the circuit board shielding method proposed by the present invention in detail.

[0022] figure 1 It is a structural schematic diagram of a TV core board circuit, including various functional chips and module circuits 1 to 10, wherein, when the TV main chip CPU and the double data rate memory DDR are in data communication, due to the communication between the DDR and the CPU The clock frequency of the circuit board is relatively high, generally at 180MHz, so the electromagnetic radiation generated is relatively strong, which will cause serious electromagnetic interference to the entire circuit board. figure 2 It is the corresponding spectrum diagram measured by the complete machine of the TV core board in the 3M method darkroom. In the spectrogram, the point of the cross symbol is the quasi-peak value. In the EMC test of electronic equipment, it is required that it cannot exceed the s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a circuit board shielding method and the electronic apparatus applying the method. The method comprise: arranging two areas with good connection near the electronic circuit needing shielding on the inner circuit board, connecting shielding wire or thin sheet metal which is exactly upon the electronic circuit. Consequently, by adopting shielding wire or thin sheet metal instead of current metal shielding case, the electromagnetic radiation of the circuit board is inhibited effectively by a simple structure, thereby the invention achieves the evident advantages of good manufacturability and low cost; further more, by arranging inserting structures on both sides of the shielding wire or thin sheet metal, and connecting and fixing with circuit board by inserting, the electronic apparatus maintenance is made more convenient.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic radiation suppression methods, and in particular relates to a method for shielding electromagnetic radiation on a circuit board and electronic equipment using the method. Background technique [0002] Electromagnetic waves radiated and leaked by electronic equipment not only seriously interfere with the normal operation of other electronic equipment, but also cause equipment dysfunction, transmission errors, and threaten human health and safety, which is very harmful. Therefore, how to reduce the electromagnetic interference (EMI) of electronic equipment has become one of the main issues that manufacturers of electronic equipment must consider. [0003] For the current electronic equipment, most of the electromagnetic radiation is generated by the circuit board inside the electronic equipment. Therefore, in order to make the electronic product meet the EMC (electromagnetic compatibility) t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00
Inventor 高金年王松丽黄勇
Owner HISENSE VISUAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com